Controlling and sensory system and method



Patented Jan. 30, 1940 PATENT OFFICE "ooN'rRoLLlNG AND sENsoRY SYSTEM AND u- METHOD SV Vmuel E. Adair, Chicago, Ill., assignor, by mesne assignments, to Ben-dix Radio Corporation, Baltimore, Md., a corporation of Delaware Application November 20, 1937, Serial No. 175,643 7 Claims. 01; 17e-100.4)

This invention relates to controlling and sensory systems and methods and more particularly to systems in Which a `record for the reproduc` tion of a sensory eiect carriesthereon an operating component to operate a device or series of devices. 4

One object of the invention is to providea controlling: and'sensorysystem ,in which the sensory 'eliect and the .devices Ito be controlled are correlated to provide automatically vfor a predetermined time relationship in their operation; with `very little possibility of confusion. Another object of the invention is to provide acontrolling and sensory system in Which there is very'little vpossibility ci `confusionarising between the controlling` Bildsensory components; that is, sovthat only the` devicev operating component operates the devices.

c Another object' of the invention is to `provide 'acontrolling method particularly adapted to control a device in conjunction with the production of sensorial effects.' 1 Other objects,v advantages andl novelfeatures 'ofthe invention Will beconieapparent from the following .description of the illustrative embodi- `ment shovvnl in the accompanying drawing, `in which: f

Fig. l is a diagrammatic representation of a system embodying the invention; Y

Fig. 2 is an enlarged diagrammatic representation ofthe normal sound track;

Fig.' 3 is an enlarged diagrammatic representation of the sound track of the device operating component; l Fig. 4 is an enlarged diagrammaticrepresentation of that portion of the sound track in which both the normal and device operating component 4'are present; and

Fig. 5 is a diagrammatic representation oi one `method of producing vthe record. f The-invention is illustrated in Figli as embodying. a disc record ll having recorded'.` thereon some sound or other sensory sequence Whichv it is desired to reproduce and an operating component I2 superimposed thereon. v Y Y This system is similar to that described and claimed in the co-pending applications of John Jenkins and Samuel E. Adair, SerQNo. 690,656 filed September 23, 1933, andSerL No. 200,652 led April 7,1938.

An electrical pickup I6 maybe employed to convert the mechanical vibrations on'cthe record 'j to electrical oscillationswhich may be ampliiied b y an amplifier` i8 and reproduced through a loud speaker 'or thelike 20. f" H A lter 22 may, if. desired, be employed in this circuit so that the operating component is not lreproduced by the loud speaker.

A device operating circuit, in parallel with the above circuitconsists oi a pair of lters 24 4and 2S, one of which is connected across the pickup I6. These iilters are so constructed as to pass only the device operating component. The other filter is connected to the iirst iilter and supplies the device operating component to an amplifier 28 Which in turn delivers the amplified device operating component to a relay 30 which may, if desired, be of the tuned type. This relay may be adapted to operate any device or series of devices and is shown as being adapted to operate a continuous film picture projector 32 more completely described below, and described and claimed in the previously mentioned copending application of John E. Jenkins and Samuel E. Adair.

As shown diagrammatically in Figures 2, 3 and 4, the record Illcontains a single recorded track incorporating both a normal sound recording I4 (Fig.` 2) which shall be called the sound track, and a device-operating recording I2 (Fig. 3) which shall be called the operating component; that is to say, the normal sound track I4 is combined with the operating component I2 so that the record lll consists, in part of recorded vibrations I3 (Fig. 4) comprising the resultant of the sound track I4 and the operating component I2. It will be understood that the operating component isomitted from themajor part of the record and is periodically placed thereon only at times when it is .desired to operate the device.

The record as so far described is substantially the same as that described in the above mentioned copending applications of. John E. Jenkins and Samuel El. Adair;

In order to minimize the possibility of accidental operation of thefprojector, the operating component, according to the present invention,

may consist of al modulated high frequency I2 as shown in Fig. 3. This modulation of the high frequency component isby a frequency suicient` ly W so that there is little possibility of both appearing simultaneously on the same normal sound track. This is a very desirable attribute, for if the operating component appears as a portion of the normal sound track, the device oper-` ating relay 30 may be actuated at the Wrong time.

The record I0, may be prepared in any suitable manner, one desirable method being illustrated in Fig. 5 and including a suitable recorder |00, ai

device for delivering to the recorder the operating component at the proper time, and a suitable pickup such as a microphone |02 for supplying to the recorder the normal sound vibrations, such as the speech, music or other sensory elfect it is desired to reproduce. The device for delivering the operating component to the record is shown as comprising a high frequency oscillator |04 connected to a modulator |06 to modulate the high frequency component by a low frequency component. Leads |01, having a switch |08 to be closed manually or otherwise at the times during the recording of the normal sound track when it is desired to operate the projector, connect the modulator to the recorder.

It is to be understood that the record l0 may be of any suitable type known in the art, that is, it may be a groove formed. in a cylinder or disc, as shown, a photographic record on a film, or a magnetic record on wire. The device operating circuit will now be described more completely. Connected to the pickup 6 is a filter 24 which is of the type commonly called a band pass filter and permits only those oscillations to pass which correspond in frequency to that of the high frequency of l the `device operating component.

The filter 24 is connected to another band pass filter 26 through a rectifier 25. The filter 26 is so constructed as to pass only those frequencies corresponding to the modulating vfrequency of the device operating component and may, if desired, be connected to an amplifier 28.

The 'amplified current is led to the device operating relay 30. The amplifier may or may not be necessary, depending upon the sensitivity of the relay.

As can readily be seen, the only current that eventually actuates the relay 30 must originate on the sound track as a high frequency oscillation modulated by a low frequency and must be of exactly the frequency which the filters 24 and 26 will pass.

It can also be seen that the filter 26 is not absolutely necessary, for the relay 30 may be tuned to the low frequency portion of the operating component. e

The device operating relay 30 is shown arranged to accomplish the control of a moving picture projector 32. When the relay 30 is energized as by the operating component on the record l0 the switchA 34 is closed. The switch 34 is connected through a time delay relay 36 to control an operating circuit 38 including a suitable power source 40 and the coil 42 of a relay 44. The relay 44 has a shiftable element 46 carrying a switch operating member 4B, which is normally biased toward switch open position by means of a spring 50. When the coil 42 is energized by the closure of the relay 36, the switch 48 will be closed against the urge of the spring 50. The switch 48 is connected to control the operation of a projector 32 and the circuit including the switch 48 is: preferably arranged to operate when the switch 48 is closed. In order to hold the switch 48 in closed position against the bias of the spring 50 after the operating frequency has passed by the pickup device I6, a holding means is provided comprising a holding nger 52 operatively associated with the shiftable element 46 of the relay 44. This holding finger is normally biased by a compression spring 54 toward a position retaining the member 46 in switch-closing position.

In order to openV the switch 48 after the nlm suitable conducting material and form switch` means controlling a circuit including a suitable power source 62' and a solenoid 64 which, when energized, serves to retract the holding linger 52 against the urge of the compression spring 54, permitting the switch 48 to open under the influence of lthe spring 50.

, Only one relay 30 hasl been shown and described and only one specificr operating component has been suggested, but it is to be understood that this device may operate any number of relays depending upon the variety of cperating components employed. It is further to be understood that the relay 30 may operate any type of device capable of being operated by closi shown nor otherwise than by the terms of the appended claims.

I claim:

1. A controlling and sensory system comprising a pickup, means simultaneously to impress upon the pickup vibrations including a sensorial component and a high frequency actuating component modified by a low frequency, means operatively connected to the pickup to reproduce the sensorial component as a sensorial effect, relay means to operate a device, a iilter connected to the pickup and so constructed and arranged as to pass only the high, frequency actuating component, and a second filter connected to the first filter and the relay means and constructed and arranged to pass only the modulating frequency of the actuating component.

2. In a controlling and sensory system, a record having recorded thereon a high-frequency actuating component modulated by a low frequency, relay means, a pick-up, a filter constructed and arranged to pass only the highfrequency component and connected to the pickup, and a second filter constructed and arranged to pass only the modulating frequency connecting the first named filter to the relay means.

inga record having recorded thereon a'sensory component and a high-frequency actuating component modulated by a low frequency, a pickup, means connected to said pickup to reproduce the sensorial component as a sensory effect, a device to be actuated including a relay, filter means constructed and arranged to pass only the high-frequency actuating component connected to the pickup, and a second filter constructed and arranged to pass only the modulating frequency connecting the iirst named lter to the relay.

4. In a controlling and sounding system, a record having recorded thereon a sensory component and an actuating component comprising a high frequency modulated by a lower frequency, means for converting said recorded components into electrical currents, means connected to said conversion means to reproduce the sensorial deriving said lower frequency, therefrom and ai.

relay actuated lin response to current of said lower frequency.

5. In a controlling and sounding system, a record having recorded thereon a sensory component and an actuating component comprising a high frequency modulated by a lower frequency, means for converting said recorded components into electrical currents, means connected to said conversion means to reproduce the sensorial component currents as a sensory eiect, filter means connected to said conversion means for discriminating against currents of said sensory component and passing 'currents of said actuating component, a demodulating device connected to said lter, and translating means responsive to derived current of said lower frequency being connected to the output of said device. q

6. In a controlling and sounding system, a record having recorded thereon a sensory component and an actuating component comprising a high frequency modulated by av lower frequency, means for converting said recorded components into electrical currents, means connected to said conversion means to reproduce the sensorial component currents as a sensory effect, a lter connected to said conversion means for selecting currents of said actuating component, a demodulator connected to the output of said filter, a second filter connected to said demodulator and passing current of said lower frequency, and relay means responsive to the output current ofsaid second lter.

7. In a controlling and sensory system, a record havin-g recorded thereon an actuating component comprising a. high frequency modulated by a lower frequency, means for converting said recorded component into electrical currents, selective filter means connected to said conversion means and passing currents of said modulated high frequency, means for deriving said lower frequency from said modulated high frequency being connected to the output of said filter, and a circuit controlling switch actuated in response to current of said lower frequency.

SAMUEL E. ADAIR. 

